INFO: task syz-executor:6902 blocked for more than 143 seconds.
      Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:6902  tgid:6902  ppid:1      flags:0x0000000d
Call trace:
 __switch_to+0x420/0x6dc arch/arm64/kernel/process.c:603
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x13d4/0x2418 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6621
 bch2_fs_read_only+0x87c/0xf14 fs/bcachefs/super.c:346
 __bch2_fs_stop+0x100/0x510 fs/bcachefs/super.c:618
 bch2_put_super+0x40/0x50 fs/bcachefs/fs.c:1826
 generic_shutdown_super+0x128/0x2b8 fs/super.c:642
 bch2_kill_sb+0x40/0x58 fs/bcachefs/fs.c:2054
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380
 task_work_run+0x230/0x2e0 kernel/task_work.c:228
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

Showing all locks held in the system:
2 locks held by kworker/u8:0/11:
1 lock held by khungtaskd/31:
 #0: ffff80008f74dfa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:325
3 locks held by kworker/u8:2/43:
 #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205
 #1: ffff800097cb7c20 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205
 #2: ffff0001b36d2698 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:560 [inline]
 #2: ffff0001b36d2698 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1415 [inline]
 #2: ffff0001b36d2698 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1714 [inline]
 #2: ffff0001b36d2698 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2d8/0x2418 kernel/sched/core.c:6436
3 locks held by kworker/u8:6/561:
4 locks held by kworker/u8:7/603:
 #0: ffff0000ed3f2148 ((wq_completion)btree_node_rewrite){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205
 #1: ffff80009ca27c20 ((work_completion)(&a->work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205
 #2: ffff0000ee9042c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:150
 #3: ffff0000ee926690 (&c->gc_lock){++++}-{3:3}, at: bch2_btree_update_start+0x588/0x15ac fs/bcachefs/btree_update_interior.c:1197
2 locks held by getty/6174:
 #0: ffff0000d226c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009b50e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211
4 locks held by kworker/u9:4/6426:
 #0: ffff0000ef137948 ((wq_completion)hci3){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205
 #1: ffff8000a3597c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205
 #2: ffff0000d15f0d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x194/0x34c net/bluetooth/hci_sync.c:327
 #3: ffff0000d15f0078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x200/0xbb0 net/bluetooth/hci_sync.c:5564
4 locks held by kworker/1:6/6772:
2 locks held by syz-executor/6895:
1 lock held by syz-executor/6896:
2 locks held by syz-executor/6902:
 #0: ffff0000da2660e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff0000da2660e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff0000da2660e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505
 #1: ffff0000ee900278 (&c->state_lock){+.+.}-{3:3}, at: __bch2_fs_stop+0xf8/0x510 fs/bcachefs/super.c:617
1 lock held by syz-executor/7373:
 #0: ffff80008f7532f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline]
 #0: ffff80008f7532f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x324/0x674 kernel/rcu/tree_exp.h:958
1 lock held by syz-executor/8563:
 #0: ffff80008f7532f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline]
 #0: ffff80008f7532f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x354/0x674 kernel/rcu/tree_exp.h:958

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